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Managing Messages > Controlling directory harvest attacks
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1.
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2.
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Enable the directory harvest attack prevention function; mark the check box Limit the number of messages/connections per IP every.
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6.
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If you have enabled the directory attack prevention option, you can also enable settings to block an IP address when a specific set of recipient conditions occurs; mark the check box Block the IP address for and enter the time interval during which to block an IP address.
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8.
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Click OK.
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Managing Messages > Controlling directory harvest attacks
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